http://upload.wikimedia.org/wikipedia/commons/0/0e/Liquid_awesome.ppg.jpg

Goals and Objectives:

The student will be able to identify changes of state as it relates to temperature change, energy exchange, and particle movement.

NC Standards:

5.03 Identify substances through the investigation of physical properties:

• Melting point
• Boiling point

Lesson Description:

-Review what we know about each state of matter using an online mind mapping tool
-Preform an activity to experience phase changes
-Collect data and record observations in a collaborative document
-Asses what was learned in the lesson

Materials Needed:

Ice
Water
Thermometer for each group
400mL beaker for each group
Hot plate

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Part 1

1) Now that we have had a good review of the 3 main states of matter (notice I said MAIN, there are actually 5 states of matter.....any smarties know the other 2.....bonus.....) go to text2mindmapcom .

Create a concept map by brainstorming all that you can remember about solids, liquids, and gases.

2) Choose full screen and do a screen shot of your map

3) Edit the Wiki and put your map here

Sam

Nicky

Victor

Frank

Betty

Kyle

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Part 2

Review you classmates maps.

When you feel comfortable that you know the difference between the 3 states click on the discussion tab and add a message post.

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Part 3

Read the entire procedure before beginning and ask any questions you may have first!

Lab Procedure

Question:

How will the temperature of a substance (water) change as heat energy is added?

Background:

The atoms of matter are in motion. This motion corresponds to the material's internal energy.

Equipment:

1. hot plate

2. 400 ml beaker

3. thermometer

4. stirring rod

5. ice water

Safety:

Be very careful with the hot plates, glassware and water. If you want to check if it is warm, put the top of your hand ABOVE it. Hot glass does not look any different from cool glass. Safety goggles must be worn at all times throughout the lab.

Procedure:

1. Add 200 ml of ice water (with ice cubes) to the empty beaker.

2. Verify your hot plate is off and cool. Make sure the bottom of your beaker is DRY.

3. Place the beaker on the hot plate.

4. Adjust the ring stand clamp so just the bulb of the thermometer is below the water surface.

5. After the readings have stabilized, record the temperature of the ice water.

6. You may wish to stir the water, but be very careful not to touch the thermometer.

7. After one minute, measure and record the temperature again.

8. Turn on the hot plate and set it to 80% of maximum.

9. Measure the temperature every minute until the water starts to boil.

10. Take three more temperature readings (3 more minutes) after the water is boiling.

11. Turn off the hot plate and unplug it. Do NOT touch the beaker.

Data Table:

Make a table showing the time in minutes and temperature reading.

Graph:

Graph the data you have gathered with the IV on the x-axis and the DV on the y-axis. Refer also to the lab report format section on graphing.

1. Label the point on your graph when the all the ice was melted .

2. Label the point on your graph when the water started to boil.

Conclusion:

Refer to the lab report format and write a conclusion for this lab. Be sure to discuss:

1. the water temperature while the ice was melting.

2. the water temperature after the ice melted, but before it started boiling.

3. the water temperature as the water was boiling.

4. how could the temperatures plateaud while still adding energy?

Get a copy of the instructor's typical data set graph (time vs. temperature readings). If your graph doesn't resemble the this graph, remember to address this in your error discussion.

**Here is the link to the Google Form for your Lab Report: Lab Report Template

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Part 4